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Lophocladia kuetzingii (Kuntze) Silva in Silva et al. 1996: 524.

Phylum Rhodophyta – Family Rhodomelaceae – Tribe Lophothalieae

Selected citations: Coppejans & Millar 2000: 333. Millar 1999: 523.


Baillouviana kuetzingii Kuntze 1891: 885.

Dasya lallemandii sensu Harvey 1855a: 543; 1863, synop.: xxiv. Sonder 1880: 36.

Dasya lallemandii Montagne var. gracilis J. Agardh 1863: 1231.

Dasya harveyi Kützing 1864: 26, pl. 71 figs e, f, nom. illegit. (See Silva et al. 1996: 524.)

Lophocladia harveyi Schmitz 1893: 223. De Toni 1903: 1016; 1924: 413. Falkenberg 1901: 553. Huisman 1997: 206. Huisman & Walker 1990: 438. Huisman et al. 1990: 97. Kendrick et al. 1990: 52. Levring 1946: 226. Lewis 1984: 62. Lucas 1909: 43. May 1965: 383. Millar & Kraft 1993: 56. Womersley 1950: 186.

Thallus (Fig. 106A) medium to dark red-brown, 5–15 cm high, much branched irregularly radially with one to several axes or main branches, laterals mostly erect, upper and mid branches clothed with rhodoplastic trichoblasts (Fig. 106C), apices often congested. Attachment by rhizoids with multicellular discs, from prostrate or erect basal parts. Structure. Pericentral cells 4, branch axes 60–100 µm in diameter near apices, 300–600 µm in diameter in mid parts, and lower axes 0.5–1.5 mm in diameter. Trichoblasts 2–5 mm long, arising just below apices on a 1/4 spiral, irregularly basally branched (not complanately) 2–4 cells apart, slender, 15–25 µm in diameter, cells L/D (5–) 10–20; adventitious filaments absent. Lateral branches replacing trichoblasts. Cortication slight above around the large, clear, pericentral cells, becoming thicker on older axes. Cells multinucleate, few in trichoblast cells; rhodoplasts discoid, crowded.

Reproduction: Gametophytes dioecious. Procarps borne on the second segment (which becomes polysiphonous) of trichoblasts. Carposporophytes with a basal fusion cell and much branched gonimoblast with clavate terminal carposporangia 25–45 µm in diameter. Cystocarps (Fig. 106B) ovoid to urceolate, 600–800 µm in diameter, with a short, corticated, stalk and a very slight neck; pericarp ostiolate, 2 cells thick, corticated only near the base. Spermatangial organs (Fig. 106C) without trichoblasts, on monosiphonous pedicels with short sterile apical filaments, 180–650 µm long and 40–80 µm in diameter.

Tetrasporangial stichidia (Fig. 106D) slightly spirally twisted, without trichoblasts, occurring as a basal branch of a trichoblast with a monosiphonous pedicel 2–4 cells long, 400–1000 (–1500) µm long and 60–100 µm in diameter. Tetrasporangia one per segment, spirally arranged (Fig. 106E), 40–80 µm in diameter, with 3 elongate cover cells.

Type from Fremantle, W. Aust. (Harvey); type in Herb. Sonder, MEL, 608855.

Selected specimens: Port Denison, W. Aust., 0–5 m deep on jetty piles (Kraft, 14.xii.1971; AD, A41177). Lancelin, W. Aust., 4 m deep (AIMS-NCI, Q66C 2743-W, 18.iii.1989; AD, A59799). Thompson Bay, Rottnest I., W. Aust., 1–2 m deep on buoy (Gordon-Mills, 4.xii.1984; AD, A56625). American R. inlet, Kangaroo I., S. Aust., 4 m deep in channel (Womersley, 6.ii.1956; AD, A20323). Muston, American R. inlet, Kangaroo I., S. Aust., 4 m deep (Owen, 5.iii.1971; AD, A38174) and 2–3 m deep (Kral 7 . iv.1972; AD, A42413).

Distribution map based
on current data relating to
specimens held in the
State Herbarium of SA

Taxonomic notes: Distribution: Warmer western and eastern coasts of Australia, and from American R. inlet on Kangaroo I., S. Australia. N Papua New Guinea.

Baillouviana kuetzingii Kuntze is a substitute name for Dasya harveyi Kützing, which was based on a Harvey specimen in Herb. Sonder (now MEL), transferred to Lophocladia by Silva (1996, p. 524).

L. kuetzingii appears to be confined to sheltered waters on the Australian coast. It appears to be closely related to L. lallemandii (Montagne) Schmitz and studies of their differences are desirable.


AGARDH, J.G. (1863). Species Genera et Ordines Algarum. Vol. 2, Part 3, pp. 787–1291. (Gleerup: Lund.)

COPPEJANS, E. & MILLAR, A.J.K. (2000). Marine red algae from the north coast of Papua New Guinea. Bot. Marina 43, 315–346.

DE TONI, G.B. (1903). Sylloge Algarum omnium hucusque Cognitarum. Vol. 4. Florideae. Sect. 3. pp. 775–1521 + 1523–1525. (Padua.)

DE TONI, G.B. (1924). Sylloge Algarum omnium hucusque Cognitarum. Vol. 6. Florideae. (Padua.)

FALKENBERG, P. (1901). Die Rhodomelaceen des Golfes von Neapel und der angrenzenden Meeres-abschnitte. Fauna und Flora des Golfes von Neapel. Monogr. 26. (Friedländer: Berlin.)

HARVEY, W.H. (1855a). Some account of the marine botany of the colony of Western Australia. Trans. R. Jr. Acad. 22, 525–566.

HARVEY, W.H. (1863). Phycologia Australica. Vol. 5, Plates 241–300, synop., pp. i-lxxiii. (Reeve: London.)

HUISMAN, J.M. & WALKER, D.I. (1990). A catalogue of the marine plants of Rottnest Island, Western Australia, with notes on their distribution and biogeography. Kingia 1, 349–459.

HUISMAN, J.M. (1997). Marine Benthic Algae of the Houtman Abrolhos Islands, Western Australia. In Wells, F.E. (Ed.) The Marine Flora and Fauna of the Houtman Abrolhos Islands, Western Australia, pp. 177–237. (W. Aust. Museum: Perth.)

HUISMAN, J.M., KENDRICK, G.A., WALKER, D.I. & COUTÉ, A. (1990). The Marine Algae of Shark Bay, Western Australia. Research in Shark Bay. Report of the France-Australe Bicentenary Expedition Committee, pp. 89–100.

KÜTZING, F.T. (1864). Tabulae Phycologicae. Vol. 14. (Nordhausen.)

KENDRICK, G.A., HUISMAN, J.M. & WALKER, D.I. (1990). Benthic macroalgae of Shark Bay, Western Australia. Bot. Mar. 33, 47–54.

KUNTZE, O. (1891). Revisio generum Plantarum. Part II. 4. Algae, pp. 877–930. (Leipzig.)

LEVRING, T. (1946). A list of marine algae from Australia and Tasmania. Acta Horti gothoburg 16, 215–227.

LEWIS, J.A. (1984). Checklist and bibliography of benthic marine macroalgae recorded from northern Australia. I. Rhodophyta. Dept. Defence, Materials Res. Lab., Melbourne, Vic. Report MRL-R-912.

LUCAS, A.H.S. (1909). Revised list of the Fucoideae and Florideae of Australia. Proc. Linn. Soc. N.S.W. 34, 9–60.

MAY, V. (1965). A census and key to the species of Rhodophyceae (red algae) recorded from Australia. Contr. N.S. W. Natl Herb. 3, 349–429.

MILLAR, A.J.K. & KRAFT, G.T. (1993). Catalogue of marine and freshwater Red Algae (Rhodophyta) of New South Wales, including Lord Howe Island, South-western Pacific. Aust. Syst. Bot. 6, 1–90.

MILLAR, A.J.K. (1999). Marine benthic algae of Norfolk Island, South Pacific. Aust. Syst. Bot. 12, 479–547.

SCHMITZ, F. (1893). Die gattung Lophothalia, J. Ag. Ber. Deutsch. Bot. Ges. 11, 212–232.

SILVA, P.C., BASSON, P.W. & MOE, R.L. (1996). Catalogue of the Benthic Marine Algae of the Indian Ocean. (Univ. California Press: Berkeley.)

SONDER, O.W. (1880). In Mueller, F., Fragmenta Phytographiae Australiae. Supplementum ad volumen undecinum: Algae Australianae hactenus cognitae, pp. 1–42, 105–107. (Melbourne.)

WOMERSLEY, H.B.S. (1950). The marine algae of Kangaroo Island. III. List of Species 1. Trans. R. Soc. S. Aust. 73, 137–197.

The Marine Benthic Flora of Southern Australia Part IIID complete list of references.

Author: H.B.S. Womersley & M.J. Parsons

Publication: Womersley, H.B.S. (24 February, 2003)
The Marine Benthic Flora of Southern Australia
Rhodophyta. Part IIID. Ceramiales – Delesseriaceae, Sarcomeniaceae, Rhodomelaceae
Reproduced with permission from The Marine Benthic Flora of Southern Australia Part IIID 2003, by H.B.S. Womersley. Australian Biological Resources Study, Canberra. Copyright Commonwealth of Australia.

Illustration in Womersley Part IIIA, 2003: FIG. 106.

Figure 106 image

Figure 106   enlarge

Fig. 106. Lophocladia kuetzingii (A, C–E, AD, A38174; B, AD, A41177). A. Habit. B. Cystocarps. C. Spermatangial organs on trichoblasts on axis. D. Stichidial branches and trichoblasts. E. Stichidium with spirally arranged tetrasporangia.

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